| 摘要 |
A bulk bin is formed of a unitary sheet of corrugated paperboard and includes foldably joined side, end, and corner panels forming an open top structure of polygonal cross sectional configuration and having bottom structure comprising a pair of primary bottom closure panels foldably joined respectively to the bottom edges of the side panels and having abutting inner edges, a bottom closure flap foldably joined to the bottom edge of each of the corner panels and disposed in flat face contacting relation with one of the primary bottom closure panels, a pair of bottom locking panels foldably joined respectively to the bottom edges of the end panels and folded into flat face contacting relation with the bottom closure flaps and with the primary bottom closure panels and interlocked with the primary bottom closure panels to secure the bottom closure flaps between the primary bottom closure panels and the bottom locking panels.
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